1/*-
2 * Copyright 2018 Aniket Pandey
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27
28#include <sys/mman.h>
29#include <sys/stat.h>
30
31#include <atf-c.h>
32#include <fcntl.h>
33#include <limits.h>
34#include <stdint.h>
35#include <stdlib.h>
36#include <unistd.h>
37
38#include "utils.h"
39
40static pid_t pid;
41static struct pollfd fds[1];
42static mode_t mode = 0777;
43static int filedesc;
44static char extregex[80];
45static struct stat statbuff;
46static const char *auclass = "cl";
47static const char *path = "fileforaudit";
48static const char *errpath = "dirdoesnotexist/fileforaudit";
49static const char *failurereg = "fileforaudit.*return,failure";
50
51
52ATF_TC_WITH_CLEANUP(munmap_success);
53ATF_TC_HEAD(munmap_success, tc)
54{
55	atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
56					"munmap(2) call");
57}
58
59ATF_TC_BODY(munmap_success, tc)
60{
61	pid = getpid();
62	snprintf(extregex, sizeof(extregex), "munmap.*%d.*return,success", pid);
63
64	/* Allocate sample memory, to be removed by munmap(2) */
65	char *addr = mmap(NULL, sizeof(char), PROT_READ , MAP_ANONYMOUS, -1, 0);
66	FILE *pipefd = setup(fds, auclass);
67	ATF_REQUIRE_EQ(0, munmap(addr, sizeof(char)));
68	check_audit(fds, extregex, pipefd);
69}
70
71ATF_TC_CLEANUP(munmap_success, tc)
72{
73	cleanup();
74}
75
76
77ATF_TC_WITH_CLEANUP(munmap_failure);
78ATF_TC_HEAD(munmap_failure, tc)
79{
80	atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
81					"munmap(2) call");
82}
83
84ATF_TC_BODY(munmap_failure, tc)
85{
86	const char *regex = "munmap.*return,failure : Invalid argument";
87	FILE *pipefd = setup(fds, auclass);
88	ATF_REQUIRE_EQ(-1, munmap((void *)SIZE_MAX, -1));
89	check_audit(fds, regex, pipefd);
90}
91
92ATF_TC_CLEANUP(munmap_failure, tc)
93{
94	cleanup();
95}
96
97
98ATF_TC_WITH_CLEANUP(close_success);
99ATF_TC_HEAD(close_success, tc)
100{
101	atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
102					"close(2) call");
103}
104
105ATF_TC_BODY(close_success, tc)
106{
107	/* File needs to exist to call close(2) */
108	ATF_REQUIRE((filedesc = open(path, O_CREAT | O_RDWR, mode)) != -1);
109	/* Call stat(2) to store the Inode number of 'path' */
110	ATF_REQUIRE_EQ(0, stat(path, &statbuff));
111	FILE *pipefd = setup(fds, auclass);
112	ATF_REQUIRE_EQ(0, close(filedesc));
113
114	/* intmax_t to support all architectures */
115	snprintf(extregex, sizeof(extregex), "close.*%jd.*return,succes",
116			(intmax_t)statbuff.st_ino);
117	check_audit(fds, extregex, pipefd);
118}
119
120ATF_TC_CLEANUP(close_success, tc)
121{
122	cleanup();
123}
124
125
126ATF_TC_WITH_CLEANUP(close_failure);
127ATF_TC_HEAD(close_failure, tc)
128{
129	atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
130					"close(2) call");
131}
132
133ATF_TC_BODY(close_failure, tc)
134{
135	const char *regex = "close.*return,failure";
136	FILE *pipefd = setup(fds, auclass);
137	/* Failure reason: file does not exist */
138	ATF_REQUIRE_EQ(-1, close(-1));
139	check_audit(fds, regex, pipefd);
140}
141
142ATF_TC_CLEANUP(close_failure, tc)
143{
144	cleanup();
145}
146
147
148ATF_TC_WITH_CLEANUP(closefrom_success);
149ATF_TC_HEAD(closefrom_success, tc)
150{
151	atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
152					"closefrom(2) call");
153}
154
155ATF_TC_BODY(closefrom_success, tc)
156{
157	const char *regex = "close_range\\(2\\),.*,0x7fffffff,lowfd,.*"
158	    "0xffffffff,highfd,.*return,success";
159	FILE *pipefd = setup(fds, auclass);
160
161	/* closefrom(2) returns 'void' */
162	closefrom(INT_MAX);
163	check_audit(fds, regex, pipefd);
164}
165
166ATF_TC_CLEANUP(closefrom_success, tc)
167{
168	cleanup();
169}
170
171
172ATF_TC_WITH_CLEANUP(revoke_success);
173ATF_TC_HEAD(revoke_success, tc)
174{
175	atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
176					"revoke(2) call");
177}
178
179ATF_TC_BODY(revoke_success, tc)
180{
181	char *ptyname;
182	pid = getpid();
183	snprintf(extregex, sizeof(extregex), "revoke.*%d.*return,success", pid);
184
185	/* Obtain a pseudo terminal and get the path to slave device */
186	ATF_REQUIRE((filedesc = posix_openpt(O_RDWR | O_NOCTTY)) != -1);
187	ATF_REQUIRE((ptyname = ptsname(filedesc)) != NULL);
188
189	FILE *pipefd = setup(fds, auclass);
190	ATF_REQUIRE_EQ(0, revoke(ptyname));
191	check_audit(fds, extregex, pipefd);
192	close(filedesc);
193}
194
195ATF_TC_CLEANUP(revoke_success, tc)
196{
197	cleanup();
198}
199
200
201ATF_TC_WITH_CLEANUP(revoke_failure);
202ATF_TC_HEAD(revoke_failure, tc)
203{
204	atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
205					"revoke(2) call");
206}
207
208ATF_TC_BODY(revoke_failure, tc)
209{
210	FILE *pipefd = setup(fds, auclass);
211	/* Failure reason: file does not exist */
212	ATF_REQUIRE_EQ(-1, revoke(errpath));
213	check_audit(fds, failurereg, pipefd);
214}
215
216ATF_TC_CLEANUP(revoke_failure, tc)
217{
218	cleanup();
219}
220
221
222ATF_TP_ADD_TCS(tp)
223{
224	ATF_TP_ADD_TC(tp, munmap_success);
225	ATF_TP_ADD_TC(tp, munmap_failure);
226
227	ATF_TP_ADD_TC(tp, close_success);
228	ATF_TP_ADD_TC(tp, close_failure);
229	ATF_TP_ADD_TC(tp, closefrom_success);
230
231	ATF_TP_ADD_TC(tp, revoke_success);
232	ATF_TP_ADD_TC(tp, revoke_failure);
233
234	return (atf_no_error());
235}
236